Thermally Protected Motor Wiring

The thermal protector consists of one or more heat sensing elements built into the motor or motor compressor plus an external control device.

Thermally protected motor wiring. Always use wiring diagram supplied on motor nameplate. The degree of protection that an internal protection device provides is classified in the iec 60034 11 standard. The other 9 wires would be connected as in a 9 wire motor note in a 9 wire motor the equivalent of t10 t11 and t12 are internally connected together. Due to such symmetrical distribution when three phase power supply.

The thermal protection is present to turn the motor off when excessive heat is generated within the motor circuitry. An 84 efficient motor with a total watt draw of 400w produces 336 watts of useful energy 400 x 84 336w. The type of thermal overload for which the thermal protection is designed 1 digit. This series offers several different horsepower options as well as thermal protection.

Tp is the abbreviation for thermal protection. This safety feature halts the temperature climb before it can burn up the motor. For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction motor. The 64 watts lost 400 336 64w becomes heat.

The 5kh series comes with permanently lubricated bearings. On a 12 wire motor wired for high voltage i e 480v 10t 11t and 12t must be connected together but not connected to anything else. There is one cylindrical stator and a three phase winding is symmetrically distributed in the inner periphery of the stator. Thermal protection thermal protection overload.

Motors are to be returned to a hazardous and or explosive atmosphere. Electric motor thermal overload switch location. A motor s efficiency is a measurement of useful work produced by the motor versus the energy that it consumes heat and friction. L1 to t1 l2 to t2 l3 to t3 t4 to t7 t5 to t8 and t6.

Electric motor thermal overload switch location. The ge marathon electric 5kh series thermally protected ac motors come in a variety of shapes and sizes. Different types of thermal protection exist and are identified by a tp code tpxxx which indicates.